Legion's Arrival, an upgrade of Reinforcements, sees the overall same value - you still get 2 gold and 3 power on a full combo, while the cost of the card remains 3. To add insult to injury, the 2 power you get from 2-card combo has been moved into 3-card combo, meaning that you need to get 2 more Pelin cards out in order to get the same value you were getting from a basic counterpart of Legion's Arrival. Since it is not a clue-based upgrade, you cannot even avoid getting it, being forced to use a weaker version of Reinforcements after some ToT rank.
I sincerely hope it was a hilarious oversight and nothing worse.